300ex power

[bnmm]

let sget something going about 300ex power mods under 100

[bwamos]

Remove Airbox lid UNI or K&N filter & Rejet.

400ex carburetor.

Sprocket change.

Umm.. that's about it for under $100 as far as the motor goes.

[300exOH]

Also you might be able to pick up a used DG pipe or drop in cam on here or ebay for close to $100. Also if you don't want to lose the lid completely you have options to mod the lid for more airflow that will cost well under 100.